A picosecond flash-photolysis study of the biphotonic ionization of psoralen derivatives and ethidium bromide

被引：11

作者：

Shaquiri, Z

Keskinova, E

Spassky, A

Angelov, D

机构：

[1] UNIV PARIS 05, UFR BIOMED, URA 400, F-75270 PARIS 06, FRANCE

[2] BULGARIAN ACAD SCI, INST SOLID STATE PHYS, SOFIA, BULGARIA

来源：

PHOTOCHEMISTRY AND PHOTOBIOLOGY | 1997年 / 65卷 / 03期

关键词：

D O I：

10.1111/j.1751-1097.1997.tb08597.x

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A picosecond flash-photolysis study of the ionization of psoralen derivatives and ethidium bromide, either free or intercalated in DNA, was carried out. A single short high-intensity 355 nm laser pulse with a few tens of J/cm(2) dose, was found to be sufficient for achieving close to the ultimate 100% yield of ionization of either free or DNA-bound psoralens, Interestingly, the photoionization efficiency of ethidium bromide is considerably reduced upon intercalation.

引用

页码：517 / 521

页数：5

共 38 条

[1]

ANGELOV D, 1991, RADIAT PHYS CHEM, V37, P717

[2]

BENIMETSKAYA L Z, 1987, Biophysics (English Translation of Biofizika), V32, P775

[3] 2-QUANTUM SELECTIVE LASER SCISSION OF POLYADENILIC ACID IN THE COMPLEMENTARY COMPLEX WITH A DANSYL DERIVATIVE OF OLIGOTHYMIDILATE [J].